The arithmetic of this puzzle is very easy indeed. There were clearly 24
pheasants at the start. Of these 16 were shot dead, 1 was wounded in the
wing, and 7 got away. The reader may have concluded that the answer is,
therefore, that "seven remained." But as they flew away it is clearly
absurd to say that they "remained." Had they done so they would
certainly have been killed. Must we then conclude that the 17 that were
shot remained, because the others flew away? No; because the question
was not "how many remained?" but "how many still remained?" Now the poor
bird that was wounded in the wing, though unable to fly, was very active
in its painful struggles to run away. The answer is, therefore, that the
16 birds that were shot dead "still remained," or "remained still."